Machine for making and repairing roads.



No. 633,637. Patented Sept. 26, I899.

M. G. BUNNELL.

MACHINE FOB MAKING AND REPAIRING ROADS.

2 Sheets-Sheet (No Model.)

No. 633,637. Patented Sept. 26, I899. m. a. BUNNELL.

MACHINE FOR MAKING AND REPAIRING ROADS.

(Application filed Feb. 11', 1899.)

(No Modal.) 2 Sheets$heat 2.

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MORTON G. BUNNELL, OF CHICAGO, ILLINOIS, ASSIGNOR TO FREDERICK G.AUSTIN, OF SAME PLACE.

MACHINE FOR MAKING AND REPAIRING ROADS.

SPECIFICATION forming part of Letters Patent N 0. 33,637, datedSeptember 26, 1899.

Application filed February 17, 1899. $erial No. '705i855. (No model.)

To (all whmn it ntag concern.-

Be it known that I, HORTON G. BUNNELL, a citizen of the United States,residing at Chicago, in the county of Cook, State of Illinois, haveinvented a certain new and useful Improvement in Machines for Making andRepairing Roads, of which the following is a specification.

My invention relates to machines of the above class in which a body-frame is arranged to extend from front to rear vehicle-wheels and inwhich a vertically-ad j ustable scraperblade is supported and arrangedfor work at a point about midway between the two sets of wheels, theadjustment of the blade being accomplished from a point at the rear endof the machine through the medium of a couple oflongitudinally-adjustable bars.

The object of my invention is to provide improved and highly-efficientmeans for raising and lowering the scraper-blade at will and to permitthe blade to be raised to the full extent of its vertical adjustmentwith a uniform application of power, or, in other words, to permit anoperator standing on the rear platform of the machine to elevate theblade without employing more power for the second than for the firsthalf of its upward movement.

To the attainment of the foregoing and other useful ends my inventionconsists in matters hereinafter set forth and described.

In the accompanying drawings, Figure 1 represents in side elevation amachine for making and repairing roads embodying my invention. Fig. 2 isa transverse section through the machine on line to 5c in Fig. 1. Fig. 3illustrates a modified form of segment, and Fig. 4 is a section on liney y in Fig.

The machine in connection with which I have illustrated my inventioncomprises a suitably-constructed body-frame A, supported by front andrear vehicle wheels I a drivers seat C, located at the forward end ofthe machine, and a scraper-blade D, having a draft connection (1 withthe forward axle and supported from the body-frame by hangerrods cl.

In the construction illustrated it will be observed that the lower endsof the hanger-rods are secured to a bar (1 extending transversely acrossthe up er side of a circle-iron (Z and that the scraper-blade is carriedor immediately supported by a couple of downwardlybent bars d secured toopposite sides of the said circle-iron. To prevent undue side shift ofthe blade, an oblique rod (1 is arranged to connect one end of the bar61 with the opposite end of a bar 61 the nearly horizontal position ofthe rod permitting the hereinafterdescribed vertical adjustment of theblade, and for the purpose of securing a slight side or end adjustmentof the latter the bar (1 is made adjustable in hearings or guides a,secured to the under side of the body-frame. An operators platform a isalso preferably provided at the rear end of the machine.

The improved means for raising and lowering the scraper-blade consists,first and preferably, of a pair of segments E, arranged one at eitherside of the machine and to which are pivotally connected the upper endsof the hanger-rods (1'. The said segments are mount= ed to turn eitherwith or upon a short shaft or other suitable support F, which may extendtransversely above the body frame, and are provided with crank-arms e,to the ends of which latter are pivotally fastened the hanger rods (1. Apair of substantially parallel and longitudinally-extending bars G arearranged in line with one and the other of the two segments and arearranged to extend from the latter rearwardly to a couple of hand-wheelsH, located at opposite sides of the rear end of the machine, it beingunderstood that the two sides of the machine are substantially alike andthat the mechanism shown in Fig. 1 is simply duplicated at the otherside of the machine. Each bar G is supported for longitudinal adjustmentupon grooved rollers a mounted on the frame, and each bar has itsforward end portion adapted to engage and traverse the periphery of oneof the segments, while its rear end is suitably connected with ahand-wheel. The latter connection preferably consists of apinion h,secured to the hub of the hand-wheel H and adapted to engage a rack g,secured or formed upon the upper surface of the rear end of the bar G.This construction may, however, be varied without in any way departingfrom the spirit of my invention, as I do not limit myself to anyparticular means for securing a longitudinal adjustment of the two bars.The forward end of each bar is preferably provided witha rack g, adaptedto engage the teeth e on the periphery of one of the segments E; butthis may also be varied,if desiredas,for instance, by adopting thedevice shown in Figs. 3 and 4; In these figures the periphery of thesegment is channeled and a couple of ropes or flexible connectors l and2 are employed to connect the segment with the bar G. The said ropes arearranged side by side in the peripheral channel of the segment, rope 1having one end secured to the segment at 3, while its opposite end issecured to the bar at 4, and rope 2 having one end secured to thesegment at 5, while its opposite end is secured to the bar at 6. Withthis arrangement the segment may be rocked or oscillated upon its axisby shifting or adjusting the bar longi tudinally, the effect being topractically wind one rope and unwind the other, according to thedirection in which the bar is shiftedthat is to say, should the bar, forinstance, be shifted forward the rope 2 would be unwound from theperiphery of the segment, while the rope I would be wound thereon, and areverse shifting of the bar would then operate to wind up rope 2 andunwind rope 1. lVhile this latter arrangement is simple and efficientand in certain instances may be employed to advantage, I prefer to adoptaconstruction substantially as shown in Figs. 1 and 2. The shaft F maybe supported in anysuitable manner-as, for instance, by the standards aand is preferably located at a point substantially above thescraper-blade. The handwheels I-I may also be mounted uponsuitablybraced standards or uprights d and are arranged so as to bewithin easy reach of the operator standing on the rear platform. Toraise the scraper-blade bodily, the attendant rotates both of thehand-wheels so as to shift the bars G forward, thereby rocking orpartially rotating each of the segments E in a direction to swing theirarms 6 upward, while to lower the blade the hand-wheels are rotated soas to shift the said bars in the opposite direction, thereby partiallyrotating the said segments in a direction to swing their arms downward.With my improved mechanism the raising of the blade is secured by auniform application of power, whereas in certain devices heretoforeemployed it has required more power to complete the vertical adjustmentof the blade than to start it.

IVhat I claim as my invention is 1. In a machine for making andrepairing roads, a body-frame, a scraper-blade supported beneath thelatter, a shaft located above the said blade, crank-arms suitablymounted upon the said shaft, hanger-rods connecting the scraper-bladewith the said crank-arms,

one or more bars extending forwardly from the rear platform of themachine to the said shaft, said bars having their forward end portionsadapted to engage and traverse the peripheries of one or morepower-transmitting devices mounted upon the said shaft and suitablyconnected with said crank-arms, and means for shifting or adjusting thesaid bar or bars longitudinally for the purpose of turning the saidpower-transmitting devices and crank arms about their axes and therebyraising or lowering the scraper-blade at will.

2. In a machine for making and repairing roads, a scraper-bladearrangedbeneath the body-frame and supported by hanger-rods or the like havingtheir upper ends pivotally connected with apair of rocking oroscillatory segments, a pair of bars arranged to extend forward from therear end of the machine and having their forward end portions connectedwith or adapted to engage the peripheries of the said segments, andmeans for shifting the said bars longitudinally so as to rock oroscillate the said segments about their axes and thereby permit theoperator to either raise or lower the scraper-blade at will.

3. In a machine for making and repairing roads, one or more rocking oroscillatory segments suitably mounted at a point substantially above thescraper-blade, one or more bars arranged to extend forward from aplatform at the rear end of the machine and havin g their forward endportions connected with and adapted to traverse the peripheries of thesaid segments,power-transmittin g connection between the latter and thescrapenblade, and

means for longitudinally shifting the said bar or bars for the purposeof rocking or partially rotating said segment or segments and therebyeither raising or lowering the scraperblade.

4. In a machine for making and repairing roads, a scraper-blade arrangedbeneath the body-frame and supported by hanger-rods pivotally connectedat their upper ends to a pair of segmental gears, a pair of rack-barsarranged to extend forward from the rear end of the machine and havingtheir forward ends in engagement with the said segmental gears, and apair of handwheels gear-connected with the rear ends of the saidrack-bars, whereby the latter may be shifted longitudinally for thepurpose of rocking or oscillating the said segments about their axes,and the scraper-blade thereby raised or lowered at will.

MORTON G. BUNNELL.

\Vitnesses:

GEO. F. BRAWNER, J. E. BROWN.

